Togo Reigo vs Shirogami #1

Detailed metallurgical comparison between Togo Reigou Steel and White Paper Steel #1.

TOGO-REIGO

Togo Reigo

Togo Reigou Steel

Extremely rare historical steel produced by Andrews Steel Company in the late 19th century. Known for achieving White #1 levels of keenness with Blue Super edge retention. Notoriously difficult to forge, requiring master-level heat control. Tools made from this steel are among the most coveted in the world.

carbonUnknown (High)
Sharpness
10
Edge Retention
10
Ease of Sharpening
5
Rust Resistance
4
SHIROGAMI-1

Shirogami #1

White Paper Steel #1

Pure high-carbon steel with minimal impurities. Takes a laser-like edge and is easy to sharpen, but more brittle than Aogami. The traditional choice of master woodworkers who demand the finest possible cutting edge and sharpen their tools with religious dedication. Rust forms overnight if neglected.

carbon1.25–1.35%
Sharpness
10
Edge Retention
7
Ease of Sharpening
9
Rust Resistance
2